Industrial Progress in Gold Mining : a Review of the Gold Mining Industry in the United States
Industrial Progress in Gold Mining : a Review of the Gold Mining Industry in the United States
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In our eReader you can find the full English version of the book. Read Industrial Progress in Gold Mining : a Review of the Gold Mining Industry in the United States Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Industrial Progress in Gold Mining : a Review of the Gold Mining Industry in the United States
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The mill of the present day is, therefore, of California origin and embodies within itself superior merits. The whole structure is of iron, excepting foundation timbers — the side pieces and stays, which may be of wood. The stamps consist of iron stems; above are iron tappits keyed fast, but movable; below stamp-heads fixed, and movable shoes; this in one piece, thus arranged, maj weigh from three hundred to one thousand pounds; usually six hundred to six hundred and fifty pounds. A *See Notes ...Nos. 14, 15, and 16.
Digitized by VnOOQlC Digitized by Google 39 T horizontal shaft, armed with cams and revolved by power, is so fitted as to cause each cam to come under each tappit to raise, and let fell by gravity, the above weight of iron.
The rise is from a few inches to nine or more, the ra- pidity, as desired, up to one hundred drops per minute.
These stamps work in batteries of five and in an inclosed high mortar of iron ; a feeding side and a discharging side, the latter covered with perforated iron or wire screen.
What to read after Industrial Progress in Gold Mining : a Review of the Gold Mining Industry in the United States?
You can find similar books in the "Read Also" column, or choose other free books by Baker, G. W. (George W.) to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The mill of the present day is, therefore, of California origin and embodies within itself superior merits. The whole structure is of iron, excepting foundation timbers — the side pieces and stays, which may be of wood. The stamps consist of iron stems; above are iron tappits keyed fast, but movable; below stamp-heads fixed, and movable shoes; this in one piece, thus arranged, maj weigh from three hundred to one thousand pounds; usually six hundred to six hundred and fifty pounds. A *See Notes ...Nos. 14, 15, and 16.
Digitized by VnOOQlC Digitized by Google 39 T horizontal shaft, armed with cams and revolved by power, is so fitted as to cause each cam to come under each tappit to raise, and let fell by gravity, the above weight of iron.
The rise is from a few inches to nine or more, the ra- pidity, as desired, up to one hundred drops per minute.
These stamps work in batteries of five and in an inclosed high mortar of iron ; a feeding side and a discharging side, the latter covered with perforated iron or wire screen.
What to read after Industrial Progress in Gold Mining : a Review of the Gold Mining Industry in the United States?
You can find similar books in the "Read Also" column, or choose other free books by Baker, G. W. (George W.) to read onlineMoreLess
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